Hi - Curious what is the thread size and length that you are in need of, I dug thru some of my bolts and found four (4) that have
different identification/no markings on the head, but look like what you need. What I have, the thread is 5/16 and one (1) inch in length from the head to the end of the threads. Email me at kcorwin@pacbell.net and I can supply you with a few pictures if you like, and if interested send me your info (name, address, etc...) and
I will mail them to you
Thanks - 70-Conv_4sp (Keith)